Near ultraviolet-visible radial wire grid polarizer for tight focusing applications

Katsiaryna Ushakova; Alberto da Costa Assafrao; Silvania F. Pereira; H. Paul Urbach

doi:10.1117/1.OE.54.10.104101

6 October 2015 Near ultraviolet-visible radial wire grid polarizer for tight focusing applications

Katsiaryna Ushakova, Alberto da Costa Assafrao, Silvania F. Pereira, H. Paul Urbach

Author Affiliations +

Optical Engineering, Vol. 54, Issue 10, 104101 (October 2015). https://doi.org/10.1117/1.OE.54.10.104101

Abstract

A circular wire grid polarizer (WGP) as a device to produce high quality radially polarized light at near UV wavelength range (in particular at the wavelength of λ=405 nm) is presented starting from design modeling followed by fabrication and performance analysis. The wire grid consists of concentric subwavelength metallic cylinders covering a high quality glass substrate and fabricated using an electron beam pattern generator and etching techniques. The theoretical modeling using the rigorous finite-element method and measurements of the transmitted light through the mask have been evaluated. An analysis on adjustments of the geometry of the WGP to produce the optimum focused spot of the longitudinal component of the electric field, its implementation, and qualitative testing are also presented.

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Katsiaryna Ushakova, Alberto da Costa Assafrao, Silvania F. Pereira, and H. Paul Urbach "Near ultraviolet-visible radial wire grid polarizer for tight focusing applications," Optical Engineering 54(10), 104101 (6 October 2015). https://doi.org/10.1117/1.OE.54.10.104101

Published: 6 October 2015

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